传递给构造函数的争论必须是接口的实例,给定的decorator实例

Question

我在尝试调试我的代码时遇到了问题,只要我看到代码的各个部分,它们都正确地链接起来,但是必须有一些明显我在这里缺失的东西.

我很抱歉我在这里粘贴了这个问题的代码量,但不幸的是,有很多文件正在为应用程序的单个实体发挥作用,我认为提供更多而不是更少的文件会更好.

首先是错误信息:

Argument 1 passed to Raid\Composers\PreferenceDataComposer::__construct() must be an instance of Raid\Repo\User\PreferenceInterface, instance of Raid\Repo\Preference\CacheDecorator given, called in C:\wamp\www\raid\app\Raid\Composers\ComposerServiceProvider.php on line 34 and defined

首先,我的视图编辑器是生成此错误的地方:

<?php namespace Raid\Composers;

use Raid\Repo\User\PreferenceInterface;

class PreferenceDataComposer {

    protected $preference;

    public function __construct(PreferenceInterface $preference)
    {
        $this->preference = $preference;
    }

    public function compose($view)
    {       
        $view->with('preferences', $this->preference->getActive());
    }

}

然后是作曲家的服务提供者:

<?php namespace Raid\Composers;

use Illuminate\Support\ServiceProvider;

class ComposerServiceProvider extends ServiceProvider {

    public function register()
    {
        $this->app->bind('Raid\Composers\PreferenceDataComposer', function($app)
        {
            return new PreferenceDataComposer(
                $this->app->make('Raid\Repo\Preference\PreferenceInterface')
            );
        });
    }

    public function boot()
    {
        $this->app->view->composer('account.preferences', 'Raid\Composers\PreferenceDataComposer');
    }

}

接下来是界面:

<?php namespace Raid\Repo\Preference;

interface PreferenceInterface {

    public function getActive();

}

而CacheDecorator:

<?php namespace Raid\Repo\Preference;

use Raid\Service\Cache\CacheInterface;

class CacheDecorator extends AbstractPreferenceDecorator implements PreferenceInterface {

    protected $cache;

    public function __construct(PreferenceInterface $preference, CacheInterface $cache)
    {
        parent::__construct($preference);
        $this->cache = $cache;
    }

    public function getActive()
    {
        $key = md5('active');

        if ($this->cache->has($key)) {
            return $this->cache->get($key);
        }

        $preferences = $this->preference->getActive();

        $this->cache->put($key, $preferences);

        return $preferences;
    }
}

和抽象装饰:

<?php namespace Raid\Repo\Preference;

abstract class AbstractPreferenceDecorator implements PreferenceInterface {

    protected $preference;

    public function __construct(PreferenceInterface $preference)
    {
        $this->preference = $preference;
    }

}

然后我们有了存储库:

<?php namespace Raid\Repo\Preference;

use Raid\Repo\AbstractRepo;
use Illuminate\Database\Eloquent\Model;
use Raid\Service\Log\LogInterface;
use Raid\Service\Email\EmailInterface;

class EloquentPreference extends AbstractRepo implements PreferenceInterface {

    protected $preference;
    protected $preferenceType;
    protected $log;
    protected $email;

    public function __construct(Model $preference, Model $preferenceType, LogInterface $log, EmailInterface $email)
    {
        $this->preference = $preference;
        $this->preferenceType = $preferenceType;
        $this->log = $log;
        $this->email = $email;
    }

    public function getActive()
    {
        return $this->preference->whereActive()->get();
    }

}

然后是雄辩的模型本身:

<?php

class Preference extends Eloquent {

    protected $table = 'preferences';
    protected $guarded = array('id');
    protected $softDelete = true;

    public function scopeWhereActive($query)
    {
        return $query->where('active', '=', '1');
    }

}

然后是绑定接口和repo的服务提供者:

<?php namespace Raid\Repo;

use Preference;
use PreferenceType;
use Raid\Service\Cache\FileCache;
use Raid\Repo\Preference\CacheDecorator as PreferenceCacheDecorator;
use Raid\Repo\Preference\EloquentPreference;
use Illuminate\Support\ServiceProvider;

class RepoServiceProvider extends ServiceProvider {

    public function register()
    {
        $app = $this->app;

        $app->bind('Raid\Repo\Preference\PreferenceInterface', function($app)
        {
            $preference = new EloquentPreference(
                new Preference, 
                new PreferenceType,
                $app->make('Raid\Service\Log\LogInterface'),
                $app->make('Raid\Service\Email\EmailInterface')
            );

            return new PreferenceCacheDecorator(
                $preference, 
                new FileCache($app['cache'], 'preferences', 1440)
            );
        });
    }

}

在上面的代码中,您可以在Composer中看到我要求接口的实例,并且在作曲家的服务提供者中,我解决了IoC的实例.

在repo服务提供程序中,我通过创建repo的实例(传入其依赖项)来绑定接口,然后返回包含缓存装饰器的repo.所有的repo,装饰器,抽象装饰器都实现了接口,所以我不确定它是如何被解析为不是接口的实例？

你能通过调试给予的任何帮助都是我的精彩.

如果您需要更多代码,请大声说出来.

Answer 1

您的问题可能出在 Raid\Repo\User\PreferenceInterface 中，它应该是 Raid\Repo\Preference\PreferenceInterface。

除此之外，我在代码中看不到真正的问题，为了测试我创建了一些命名空间、接口和类，但 PreferenceDataComposer 实例化对我来说没有任何问题。

在我的文章中routes.php，我创建了一种方法来实例化它，创建基于 eloquent 的类，一些需要的绑定，手动注册服务提供者并加载命名空间文件：

<?php

class Preference extends Eloquent {

    protected $table = 'preferences';
    protected $guarded = array('id');
    protected $softDelete = true;

    public function scopeWhereActive($query)
    {
        return $query->where('active', '=', '1');
    }

}

class PreferenceType extends Eloquent {

    protected $table = 'preferences';
    protected $guarded = array('id');
    protected $softDelete = true;

    public function scopeWhereActive($query)
    {
        return $query->where('active', '=', '1');
    }

}

App::bind('Raid\Service\Log\LogInterface', 'Raid\Service\Log\Log');
App::bind('Raid\Service\Email\EmailInterface', 'Raid\Service\Email\Email');
App::bind('Raid\Service\Cache\CacheInterface', 'Raid\Service\Cache\FileCache');

require app_path().'/Mortelugo.php';

Route::any('test', function() {

    $repo = new Raid\Repo\RepoServiceProvider(App::make('app'));
    $repo->register();

    $composer = new Raid\Composers\ComposerServiceProvider(App::make('app'));
    $composer->register();

    $preference = App::make('Raid\Composers\PreferenceDataComposer');

    // This is it instantiated

    dd($preference);

});

我创建了一个Mortelugo.php包含所有名称空间的文件，但我必须创建一些缺失的名称空间并更改其中一个命名不正确的名称空间：

<?php

namespace Raid\Composers {

    use Raid\Repo\Preference\PreferenceInterface;

    class PreferenceDataComposer {

        protected $preference;

        public function __construct(PreferenceInterface $preference)
        {
            $this->preference = $preference;
        }

        public function compose($view)
        {       
            $view->with('preferences', $this->preference->getActive());
        }

    }

}

namespace Raid\Composers {

    use Illuminate\Support\ServiceProvider;

    class ComposerServiceProvider extends ServiceProvider {

        public function register()
        {
            $this->app->bind('Raid\Composers\PreferenceDataComposer', function($app)
            {
                return new PreferenceDataComposer(
                    $this->app->make('Raid\Repo\Preference\PreferenceInterface')
                );
            });
        }

        public function boot()
        {
            $this->app->view->composer('account.preferences', 'Raid\Composers\PreferenceDataComposer');
        }

    }

}

namespace Raid\Repo {

    use Preference;
    use PreferenceType;
    use Raid\Service\Cache\FileCache;
    use Raid\Repo\Preference\CacheDecorator as PreferenceCacheDecorator;
    use Raid\Repo\Preference\EloquentPreference;
    use Illuminate\Support\ServiceProvider;

    abstract class AbstractRepo {

    }

    class RepoServiceProvider extends ServiceProvider {

        public function register()
        {
            $app = $this->app;

            $app->bind('Raid\Repo\Preference\PreferenceInterface', function($app)
            {
                $preference = new EloquentPreference(
                    new Preference, 
                    new PreferenceType,
                    $app->make('Raid\Service\Log\LogInterface'),
                    $app->make('Raid\Service\Email\EmailInterface')
                );

                return new PreferenceCacheDecorator(
                    $preference, 
                    new FileCache($app['cache'], 'preferences', 1440)
                );
            });
        }

    }

}

namespace Raid\Repo\Preference {

    interface PreferenceInterface {

        public function getActive();

    }

    use Raid\Service\Cache\CacheInterface;

    abstract class AbstractPreferenceDecorator implements PreferenceInterface {

        protected $preference;

        public function __construct(PreferenceInterface $preference)
        {
            $this->preference = $preference;
        }

    }


    class CacheDecorator extends AbstractPreferenceDecorator implements PreferenceInterface {

        protected $cache;

        public function __construct(PreferenceInterface $preference, CacheInterface $cache)
        {
            parent::__construct($preference);
            $this->cache = $cache;
        }

        public function getActive()
        {
            $key = md5('active');

            if ($this->cache->has($key)) {
                return $this->cache->get($key);
            }

            $preferences = $this->preference->getActive();

            $this->cache->put($key, $preferences);

            return $preferences;
        }
    }

    use Raid\Repo\AbstractRepo;
    use Illuminate\Database\Eloquent\Model;
    use Raid\Service\Log\LogInterface;
    use Raid\Service\Email\EmailInterface;

    class EloquentPreference extends AbstractRepo implements PreferenceInterface {

        protected $preference;
        protected $preferenceType;
        protected $log;
        protected $email;

        public function __construct(Model $preference, Model $preferenceType, LogInterface $log, EmailInterface $email)
        {
            $this->preference = $preference;
            $this->preferenceType = $preferenceType;
            $this->log = $log;
            $this->email = $email;
        }

        public function getActive()
        {
            return $this->preference->whereActive()->get();
        }

    }

}

namespace Raid\Service\Log {

    interface LogInterface {

    }

    class Log implements LogInterface {

    }

}

namespace Raid\Service\Email {

    interface EmailInterface {

    }

    class Email implements EmailInterface {

    }

}

namespace Raid\Service\Cache {

    interface CacheInterface {

    }

    class FileCache implements CacheInterface {

    }

}